Alright, let's work through 5640 times 7478 step by step
5640 × 7478 = 7478 × (5640)
+ 7478 × 0 resulting in 0
+ 7478 × 40 resulting in 299120
+ 7478 × 600 yielding 4486800
+ 7478 × 5000 which equals 37390000

= 42175920
